FORT BENTON, MONTANA

Period of Record General Climate Summary - Growing Degree Days

Station:(243113) FORT BENTON
From Year=1948 To Year=2006
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	21	27	68	218	481	696	909	871	534	266	65	24	4179
40 S	21	48	116	333	814	1510	2419	3290	3824	4091	4155	4179	4179
45 M	7	9	25	118	334	546	754	717	390	152	26	8	3085
45 S	7	16	40	158	493	1039	1792	2509	2899	3051	3077	3085	3085
50 M	2	2	7	53	203	397	599	562	256	70	8	2	2159
50 S	2	4	10	63	266	663	1261	1823	2080	2149	2158	2159	2159
55 M	0	0	1	18	101	254	444	408	142	23	2	0	1395
55 S	0	0	2	20	121	375	819	1228	1370	1393	1395	1395	1395
60 M	0	0	0	4	38	134	293	262	61	5	0	0	798
60 S	0	0	0	4	43	177	470	731	793	798	798	798	798

Corn Growing Degree Days
50 M	15	29	73	175	313	430	568	545	359	218	60	19	2805
50 S	15	44	117	292	605	1036	1604	2149	2508	2726	2786	2805	2805

M = Monthly Data
S - Running sum of monthly data.
Growing Degree Day units are computed as the difference between the daily average temperature and the base temperature. (Daily Ave. Temp. - Base Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is above the base temperature. Negative numbers are discarded. Example: If the days high temperature was 95 and the low temperature was 51, the base 60 heating degree day units is ((95 + 51) / 2) - 60 = 13. This is done for each day of the month and summed.
Corn Growing Degree Day units have the limitations that the maximum daily temperatures greater than 86 F are set to 86 F and minimums less than 50 F are set to 50 F.
Table updated on Jul 28, 2006
Months with 5 or more missing days are not considered
Years with 1 or more missing months are not considered

Western Regional Climate Center, wrcc@dri.edu